MB Air Brake Test 8
- Perfect for first-time and renewal commercial applicants, and those adding endorsements
- Based on 2024 MB commercial driver's licence manual
- Triple-checked for accuracy
- Updated for May 2024
Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.
About this test
Air brakes are an integral part of commercial vehicles, requiring a deep understanding of their operations and safety features. Keep your preparation momentum going with this 50-question practice test based on the 2024 MB commercial driver’s manual. Questions range from basic functionalities to emergency procedures, and each comes with a detailed explanation to deepen your grasp of air brake systems. Your Air Brake endorsement is not far away; let's get it!
Our commitment to accuracy and quality in our practice tests
Explore our rigorous, multi-tiered verification process that ensures each question mirrors the official manual for unparalleled accuracy.
Written by Andrei Zakhareuski Updated over a week ago
At Tests.ca, we understand the importance of reliable and accurate practice tests to help you prepare for your driver's knowledge exam. That's why we've developed a meticulous process to create and continually update our practice questions, ensuring they reflect the most current driving laws and regulations.
Here's an inside look at how we maintain the highest quality in our practice tests.
Content Creation and Verification Process
- Alignment with Official Driving Handbooks:
Every question we develop is based on the most recent version of each province's official driving manual. Our team regularly monitors each province's official website for the latest updates to ensure our practice tests are always aligned with the most current information. - Community Feedback Integration:
We leverage feedback from our vast community of users to understand which topics are most frequently tested. This helps us focus on the areas that are most relevant and beneficial for your preparation. - Expert Content Creation:
Our in-house editor, Steven, who has extensive experience in driver education, crafts each question with precision. He conducts a thorough review of each question against the official manuals to ensure accuracy. - Rigorous Review Process:
Once Steven has finalized a set of questions, our team conducts a joint review session. This second level of scrutiny involves content accuracy, proofreading, and fact-checking to eliminate any errors. - User Feedback Mechanism:
After a question goes live on our site, we keep the lines of communication open. Each question features a feedback button, inviting users to report any issues or errors. This continuous feedback loop allows us to address and rectify any concerns promptly. - Responsive Updates:
In line with our commitment to accuracy, we quickly update our practice questions to reflect any changes in the provincial government manuals. Additionally, we update the free electronic copy of the state's driver's license manuals on our site, typically within a few days after the government publishes them.
Our thorough quality control process ensures that you have access to practice tests that are as accurate and up-to-date as possible. We believe in the power of well-prepared drivers and are dedicated to providing you with the best study tools to help you succeed on your driver's knowledge exam.
List of questions (classic view)
- If a vehicle's weight is doubled, the braking distance is...
- Why is it recommended to inspect the air brake systems on a flat surface?
- What happens when there is an abnormal drop in wheel speed in an ABS-equipped vehicle?
- According to the Highway Traffic Act, what is the minimum frequency for checking vehicles with air brakes?
- To slow down on long downgrades without overusing the service brakes, tractor-trailers may use any of these EXCEPT
- In vehicles with ABS, where are the warning lights or malfunction lamps typically located?
- If your vehicle's weight is increased by a heavy load, what is NOT likely to happen?
- If both the vehicle's weight and speed are doubled, by how much is the braking distance increased?
- Do anti-lock brake systems (ABS) decrease stopping distances?
- What is the primary benefit of having anti-lock brakes?
- Which condition does not cause the operating temperature of the brakes to increase more than normal?
- Which component is NOT external to the s-cam foundation brake?
- During brake inspections, what are drivers not necessarily expected to identify about brake components?
- What component does not cover part of the rotor in an air disc brake?
- What is the consequences of excessive pushrod stroke?
- Which of these factors does not impact how your vehicle's brakes work?
- When should the brake-shoe lining be in contact with the brake drum?
- How is the functioning status of an anti-lock braking system indicated in a vehicle?
- Why must wheel chocks or blocks be utilized during air brake inspections?
- If a wheel seal is leaking, where might some of the lubricant end up?
- What is the primary purpose of an air brake system inspection?
- Can a vehicle with a defective air brake system legally be operated on any road or highway?
- What do brakes convert the energy of a moving vehicle into?
- If a vehicle is operated with defects or without the required inspections, it can result in all of the following EXCEPT
- Under normal driving conditions on clean dry roads, how can you identify if a vehicle has anti-lock brakes?
- When the speed of a vehicle is doubled, the stopping distance is...
- Does brake imbalance influence the vehicle's ability to steer?
- Which air brake components are most susceptible to damage?
- What is the principal method for identifying air leaks in the air brake chamber?
- In a governor test, the cut-in pressure setting is usually how many psi below the cut-out pressure setting?
- Should each brake at both ends of an axle have equal-sized air brake chambers to ensure balanced braking forces?
- Most low air pressure warning devices activate when the pressure falls to
- If a vehicle fails the air pressure build-up time test, when should it be reported to the operator and repaired?
- Before conducting the air-pressure build-up time test, the air pressure should be reduced to
- The air brake system fails the air pressure build-up time test if the build-up time exceeds
- At what psi is the air brake system deemed flawed if the cut-in pressure drops below this level?
- Which of these is incorrect? An air brake chamber inspection checks for
- Which of these inspections does not include the vehicle's air compressor?
- There is often a noticeable change in the behaviour of brakes with drums or rotors that are...
- The air compressor belt is NOT necessarily defective if the belt is
- To ensure balanced braking, slack adjusters on each end of an axle should be...
- When you inspect the air lines during the pre-trip inspection, what should you look for?
- To test the air pressure build-up time, what should be the idling speed of the engine?
- What psi should the pressure be above when you start testing the low air-pressure warning device?
- What is the maximum allowable air loss when testing system air-loss for a straight truck, tractor, or bus?
- The cut-out pressure must not be lower than how much psi?
- For testing the air pressure build-up time, what pressure range should you observe?
- The cut-out pressure must not exceed what psi?
- What's the aftermath if the vehicle fails the low air-pressure warning test?
- What is checked during an inspection of a vehicle's air tanks?